<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>DeepSeek Chat</title>
    <script src="https://cdn.jsdelivr.net/npm/marked/marked.min.js"></script>
    <style>
        :root {
            --primary-color: #5b8cff;
            --user-bg: linear-gradient(135deg, #5b8cff 0%, #3d6ef7 100%);
            --bot-bg: linear-gradient(135deg, #f0f8ff 0%, #e6f3ff 100%);
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            margin: 0;
            padding: 20px;
            display: flex;
            justify-content: center;
            min-height: 100vh;
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
        }
        .chat-container {
            width: 100%;
            max-width: 800px;
            height: 90vh;
            background: rgba(255, 255, 255, 0.95);
            border-radius: 20px;
            box-shadow: var(--shadow);
            backdrop-filter: blur(10px);
            display: flex;
            flex-direction: column;
            overflow: hidden;
        }
        .chat-header {
            padding: 24px;
            background: var(--primary-color);
            color: white;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        }
        .chat-header h1 {
            margin: 0;
            font-size: 1.8rem;
            font-weight: 600;
            letter-spacing: -0.5px;
        }
        .chat-messages {
            flex: 1;
            padding: 20px;
            overflow-y: auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .chat-message {
            max-width: 75%;
            padding: 16px 20px;
            border-radius: 20px;
            line-height: 1.5;
            animation: messageAppear 0.3s ease-out;
            position: relative;
            word-break: break-word;
        }
        .chat-message.user {
            background: var(--user-bg);
            color: white;
            align-self: flex-end;
            border-bottom-right-radius: 4px;
            box-shadow: var(--shadow);
        }
        .chat-message.bot {
            background: var(--bot-bg);
            color: #2d3748;
            align-self: flex-start;
            border-bottom-left-radius: 4px;
            box-shadow: var(--shadow);
        }
        .chat-input {
            padding: 20px;
            background: rgba(255, 255, 255, 0.9);
            border-top: 1px solid rgba(0, 0, 0, 0.05);
            display: flex;
            gap: 12px;
        }
        .chat-input input {
            flex: 1;
            padding: 14px 20px;
            border: 2px solid rgba(0, 0, 0, 0.1);
            border-radius: 16px;
            font-size: 1rem;
            transition: all 0.2s ease;
            background: rgba(255, 255, 255, 0.8);
        }
        .chat-input input:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(91, 140, 255, 0.2);
        }
        .chat-input button {
            padding: 12px 24px;
            border: none;
            border-radius: 16px;
            background: var(--primary-color);
            color: white;
            font-size: 1rem;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s ease;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .chat-input button:hover {
            background: #406cff;
            transform: translateY(-1px);
        }
        .chat-input button:disabled {
            background: #c2d1ff;
            cursor: not-allowed;
            transform: none;
        }
        .chat-input button svg {
            width: 18px;
            height: 18px;
            fill: currentColor;
        }
        @keyframes messageAppear {
            from {
                opacity: 0;
                transform: translateY(10px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .typing-indicator {
            display: inline-flex;
            gap: 6px;
            padding: 12px 20px;
            background: var(--bot-bg);
            border-radius: 20px;
            align-self: flex-start;
        }
        .typing-dot {
            width: 8px;
            height: 8px;
            background: rgba(0, 0, 0, 0.3);
            border-radius: 50%;
            animation: typing 1.4s infinite ease-in-out;
        }
        .typing-dot:nth-child(2) {
            animation-delay: 0.2s;
        }
        .typing-dot:nth-child(3) {
            animation-delay: 0.4s;
        }
        @keyframes typing {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-4px);
            }
        }
        @media (max-width: 640px) {
            body {
                padding: 10px;
            }
            .chat-container {
                height: 95vh;
                border-radius: 16px;
            }
            .chat-message {
                max-width: 85%;
            }
        }
    </style>
</head>
<body>
<div class="chat-container">
    <div class="chat-header">
        <h1>DeepSeek Chat</h1>
    </div>
    <div class="chat-messages" id="chatMessages"></div>
    <div class="chat-input">
        <input type="text" id="questionInput" placeholder="输入消息..." onkeydown="handleKeyDown(event)">
        <button id="sendButton" disabled>
            <svg viewBox="0 0 24 24">
                <path d="M2.01 21L23 12 2.01 3 2 10l15 2-15 2z" />
            </svg>
            发送
        </button>
    </div>
</div>
<script>
    const questionInput = document.getElementById('questionInput');
    const sendButton = document.getElementById('sendButton');
    const chatMessages = document.getElementById('chatMessages');
    let isBotResponding = false;
    // 输入验证
    questionInput.addEventListener('input', () => {
        sendButton.disabled = questionInput.value.trim().length === 0;
    });
    // 回车发送
    function handleKeyDown(e) {
        if (e.key === 'Enter' && !sendButton.disabled && !isBotResponding) {
            sendButton.click();
        }
    }
    // 修改后的消息处理逻辑
    let currentBotMessage = null; // 当前正在更新的AI消息
    async function handleBotResponse(response) {
        const reader = response.body.getReader();
        const decoder = new TextDecoder();
        let buffer = '';
        currentBotMessage = displayMessage('bot', '');
        try {
            while (true) {
                const { done, value } = await reader.read();
                if (done) {
                    // 处理最后剩余的数据
                    if (buffer) processLine(buffer);
                    break;
                }
                buffer += decoder.decode(value, { stream: true });
                const lines = buffer.split('\n');
                // 保留未完成的行在缓冲区
                buffer = lines.pop() || '';
                lines.forEach(line => {
                    if (line.startsWith('data:')) {
                        const data = line.replace(/^data:\s*/g, '').trim();
                        if (data === '[DONE]') return;
                        currentBotMessage.textContent += data;
                    }
                });
                chatMessages.scrollTop = chatMessages.scrollHeight;
            }
        } finally {
            currentBotMessage = null;
        }
    }
    // 发送逻辑
    sendButton.addEventListener('click', async () => {
        if (isBotResponding) return;

        const question = questionInput.value.trim();
        if (!question) return;

        questionInput.value = '';
        sendButton.disabled = true;
        isBotResponding = true;
        // 显示用户消息（新消息始终出现在下方）
        displayMessage('user', question);
        try {
            // 显示加载状态
            const typingIndicator = createTypingIndicator();

            const response = await fetch('/deepSeek/chat', {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json',
                    'Accept': 'text/event-stream'
                },
                body: JSON.stringify({ question }),
            });
            typingIndicator.remove();
            await handleBotResponse(response); // 处理流式响应
        } catch (error) {
            displayMessage('bot', '暂时无法处理您的请求，请稍后再试');
        } finally {
            isBotResponding = false;
            questionInput.focus();
        }
    });
    // 创建消息元素
    function displayMessage(sender, content) {
        const messageDiv = document.createElement('div');
        messageDiv.className = `chat-message ${sender}`;
        messageDiv.textContent = content;
        chatMessages.appendChild(messageDiv);
        chatMessages.scrollTop = chatMessages.scrollHeight;
        return messageDiv;
    }
    // 创建输入指示器
    function createTypingIndicator() {
        const container = document.createElement('div');
        container.className = 'typing-indicator';
        container.innerHTML = `
                <div class="typing-dot"></div>
                <div class="typing-dot"></div>
                <div class="typing-dot"></div>
            `;
        chatMessages.appendChild(container);
        chatMessages.scrollTop = chatMessages.scrollHeight;
        return container;
    }
</script>
</body>
</html>